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Heat Transfer

Heat Transfer
Controlling heat transfer film co-efficient is the one, which offers __________ resistance to heat transfer.

no
the largest
the least
lower

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Heat Transfer
Which is the most suitable for the concentration of foamy & frothy liquors?

None of these
Long tube vertical evaporator
Agitated film evaporator
Open pan evaporator

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Heat Transfer
Conductance is given by(where, x = thickness, A = heat flow area, K = thermal conductivity.)

KA/x
A/Kx
K/Ax
X/KA

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Heat Transfer
Which of the following has the lowest overall heat transfer co-efficient?

Molten sodium
Water
Air
Dowtherm

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Heat Transfer
Planck's distribution law is valid for __________ bodies

coloured
white
black
all of the listed here

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Heat Transfer
Unsteady state heat conduction occurs, when

Heat flows in one direction only
Three dimensional heat flow is concerned
Temperature distribution is independent of time
Temperature distribution is dependent on time

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